Event DescriptionNicholas Kristof and Sheryl WuDunn. Nicholas Kristof is a columnist for The New York Times and Sheryl WuDunn is a senior managing director with Mid-Market Securities. In 1990 Kristof and his wife, Sheryl WuDunn, earned a Pulitzer Prize for the International Reporting for their work on the pro-democracy student movement and the related Tiananmen Square protests of 1989. They were the first married couple to win a Pulitzer for journalism.